Formal:
* Je suis amusant(e). (I am amusing.) - This is the most direct translation and works well in formal situations.
* J'ai le sens de l'humour. (I have a sense of humor.) - This emphasizes your ability to understand and appreciate humor.
Informal:
* Je suis marrant(e). (I am funny.) - This is the most common and natural way to say it in informal settings.
* Je suis drole. (I am funny/witty.) - This emphasizes your ability to make people laugh.
* J'aime faire rire les gens. (I like to make people laugh.) - This highlights your intention to be funny.
Other options:
* Je suis un(e) clown. (I am a clown.) - This is a playful and slightly self-deprecating way to say you are funny.
* J'ai un humour bizarre. (I have a strange sense of humor.) - This acknowledges that your humor might be unusual.
The best option for you will depend on the situation and your relationship with the person you are speaking to.